56218864 has 60 divisors (see below), whose sum is σ = 124987536. Its totient is φ = 24400896.

The previous prime is 56218859. The next prime is 56218867. The reversal of 56218864 is 46881265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56218867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45357 + ... + 46579.

Almost surely, 2^56218864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56218864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62493768).

56218864 is an abundant number, since it is smaller than the sum of its proper divisors (68768672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56218864 is a wasteful number, since it uses less digits than its factorization.

56218864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1255 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 56218864 is about 7497.9239793425. The cubic root of 56218864 is about 383.0840074139.

The spelling of 56218864 in words is "fifty-six million, two hundred eighteen thousand, eight hundred sixty-four".